问题
选择题
She had just finished her homework ______ her mother asked her to practise playing the piano yesterday.
A．when
B．while
C．after
D．since
答案
答案：A
搜题请搜索小程序“爱下问搜题”
She had just finished her homework ______ her mother asked her to practise playing the piano yesterday.
A．when
B．while
C．after
D．since
答案：A